My SeaMonkey 2.13.2 needs 2 lines to show the master Version texts in the version picker. That problem is independent to Browser zoom factor. Works fine, but looks ugly and might be worrying.
Same with FF 16
Confirmed with Firefox 16
I have committed a patch to solve this. It will be updated with the next update of the bugzilla-assistent.
Now looks fine for me with Seamonkey 2.13.2 and zomm 100%